IBM DJSA-210 Hard Drive Specifications - Page 180

Status Flag definitions, Normalized values, Off-Line Scan Uncorrectable Sector Count

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10 Spin Retry Count 12 Device Power Cycle Count 191 Gsense Error Rate 192 Power Off Retract Count 193 Load/Unload Cycle Count 196 Reallocation Event Count 197 Current Pending Sector Count 198 Off-Line Scan Uncorrectable Sector Count 199 Ultra DMA CRC Error Count Status Flag definitions: Bit Flag Name 0 Pre-Failure/ Advisory bit 1 On-Line Collective bit 2-5 Reserved bits 6-15 Reserved bits Definition If bit = 0, an Attribute Value less than or equal to its corresponding Attribute Threshold indicates an Advisory condition where the usage or age of the device has exceeded its intended design life period. If bit = 1, an Attribute Value less than or equal to its corresponding Attribute Threshold indicates a Pre-Failure condition where imminent loss of data is being predicted. If bit = 0, the Attribute Value is updated only during Off-Line testing. If bit = 1, the Attribute Value is updated during On-Line testing or during both On-Line and Off-Line testing. may either 0 or 1 Always 0 Figure 113. Status Flag definitions Normalized values: The device will perform conversion of the raw Attribute Values to transform them into normalized values which the host can then compare with the Threshold values. A Threshold is the excursion limit for a normalized Attribute Value. In normalizing the raw data, the device will perform any necessary statistical validity checks to ensure that an instantaneous raw value is not improperly reflected in the normalized Attribute Value (i.e., one read error in the first 10 reads being interpreted as exceeding the read error rate threshold when the subsequent 1 billion reads all execute without error). The end points for the normalized values for all Attributes will be 1 (01h) at the low end, and 100 (64h) at the high end for the device. For Performance and Error Rate Attributes, values greater than 100 are also possible. The maximum value possible is 253 (FDh). Travelstar 32GH/30GT/20GN hard disk drive specifications 166

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10
Spin Retry Count
12
Device Power Cycle Count
191
Gsense Error Rate
192
Power Off Retract Count
193
Load/Unload Cycle Count
196
Reallocation Event Count
197
Current Pending Sector Count
198
Off-Line Scan Uncorrectable Sector Count
199
Ultra DMA CRC Error Count
Status Flag definitions:
Always 0
Reserved bits
6–15
may either 0 or 1
Reserved bits
2–5
If bit = 0, the Attribute Value is
updated only
during Off–Line testing.
If bit = 1, the Attribute
Value is updated
during On–Line testing or during
both On–Line
and Off–Line testing.
On–Line
Collective bit
1
If bit = 0, an Attribute Value less than or equal
to its corresponding Attribute
Threshold indicates
an Advisory condition
where the usage or age of the
device has
exceeded its intended design life
period. If bit = 1, an Attribute Value less than or
equal to its corresponding Attribute
Threshold
indicates a Pre–Failure condition
where imminent
loss of data is being
predicted.
Pre–Failure/
Advisory bit
0
Definition
Flag Name
Bit
Figure 113. Status Flag definitions
Normalized values:
The device will perform conversion of the raw Attribute Values to transform them into
normalized values which the host can then compare with the Threshold values. A Threshold is the
excursion limit for a normalized Attribute Value. In normalizing the raw data, the device will perform any
necessary statistical validity checks to ensure that an instantaneous raw value is not improperly reflected
in the normalized Attribute Value (i.e., one read error in the first 10 reads being interpreted as exceeding
the read error rate threshold when the subsequent 1 billion reads all execute without error). The end
points for the normalized values for all Attributes will be 1 (01h) at the low end, and 100 (64h) at the high
end for the device. For Performance and Error Rate Attributes, values greater than 100 are also possible.
The maximum value possible is 253 (FDh).
Travelstar 32GH/30GT/20GN hard disk drive specifications
166